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Finding the Fourth Proportional to 555.34, 766.38 and 437.47

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Solution

The fourth proportional to 555.34, 766.38 and 437.47 is: 603.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.34 : 766.38 = 437.47 : x
  2. Step 2: Convert to fraction form
    555.34/766.38 = 437.47/x
  3. Step 3: Cross multiply
    555.34x = 766.38 × 437.47
  4. Step 4: Simplify right side
    555.34x = 335,268.26
  5. Step 5: Solve for x
    x = 335,268.26/555.34
  6. Step 6: Final answer
    x = 603.72

Related Problems

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.